Anonymous Anonymous

13-12-2013
Mathematics

Answered

find the area of a circle with a diameter of 22 inches?

Verified Answer :

tomek1172 tomek1172

13-12-2013

\(d=2r\\ d=22\\ 2r=22\\ r=11\ inches\\ \\ A=\pi r^2\\ A=\pi \cdot 11^2=3,14 \cdot 121=379,94\ inch^2\)

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13-12-2013

\(R=\frac{Diameter}{2}\)

then

\(R=\frac{22~in}{2}\)

\(\boxed{R=11~in}\)

now we just need to apply this formula

\(S=\pi*R^2\)

\(S=\pi*11^2\)

\(\boxed{\boxed{S=121*\pi~in^2}}\)

Answer Link

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